NG2 - ToggleStyle-Apply from components:

ng2-ToggleStyle-Apply from components:
-------------------------------------

Ref: - https://plnkr.co/edit/yCalvA1OsC6w2VZUAHm6?p=preview

//our root app component
import { NgModule} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {Component} from '@angular/core';

// while using [ngdirective] import FomrsModule in your app.module.ts

@Component({
  selector: 'my-app',
  providers: [],
  template: `
    <div>
      <div [ngClass]="{'my-class': isClassVisible }">
        I'm a div that wants to be styled
      </div>
      <button (click)="isClassVisible = !isClassVisible;">Toggle style</button>
    </div>
  `,
  styles: [
  `
  .my-class {
    background-color: yellow;
  }
  `
  ]
})
class App {
  isClassVisible: false;

  constructor() {
  }

}

@NgModule({
  imports: [ BrowserModule ],
  declarations: [ App ],
  bootstrap: [ App ]
})
export class AppModule {}